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Finding the Fourth Proportional to 19,028.16, 28,539 and 7,341.48

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Solution

The fourth proportional to 19,028.16, 28,539 and 7,341.48 is: 11,010.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,028.16 : 28,539 = 7,341.48 : x
  2. Step 2: Convert to fraction form
    19,028.16/28,539 = 7,341.48/x
  3. Step 3: Cross multiply
    19,028.16x = 28,539 × 7,341.48
  4. Step 4: Simplify right side
    19,028.16x = 209,518,497.72
  5. Step 5: Solve for x
    x = 209,518,497.72/19,028.16
  6. Step 6: Final answer
    x = 11,010.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.